Switched converter with variable peak current and variable off-time control

A converter coupled to a DC voltage input and connectable to a load, includes a signal responsive switch coupled between a first circuit point and a second circuit point. In lieu of burst mode operation during low load conditions, the peak switch current is varied directly with load condition and a...

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Bibliographic Details
Main Authors WU ALBERT M, PIETKIEWICZ STEVEN M
Format Patent
LanguageEnglish
Published 28.06.2007
Subjects
CONTROLLING
PHYSICS
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:A converter coupled to a DC voltage input and connectable to a load, includes a signal responsive switch coupled between a first circuit point and a second circuit point. In lieu of burst mode operation during low load conditions, the peak switch current is varied directly with load condition and a switch deactivation interval is varied inversely with load condition. The switch deactivation level is within a maximum level to avoid audio frequency band interference, while maintaining high efficiency operation throughout the load range.
Bibliography:Application Number: US20050316993